# Nuclear Essex > Get outdoors and visit Nuclear Essex, the home of Nuclear Races. Take on the woodland course at Wild Forest or try the high ropes, zip trek and axe throwing at --- ## Pages - [Summer events and activities at Nuclear Essex](https://nuclearessex26.wpenginepowered.com/summer/): Get ready for the sunshine. Sign up to stay informed about our annual Summer Holiday events, seasonal releases, and member-only... - [Nuclear Fit Photos](https://nuclearessex26.wpenginepowered.com/nuclear-fit/nuclear-fit-photos/): Browse through the photos and videos from previous events - [Nuclear Fit Results](https://nuclearessex26.wpenginepowered.com/nuclear-races/nuclear-fit-results/): Take a look at previous Nuclear Fit event results. - [Format](https://nuclearessex26.wpenginepowered.com/nuclear-races/format/): Nuclear Fit is made up of a 1km trail run alternated with a functional fitness station repeated 6 times. - [Race for a Reason](https://nuclearessex26.wpenginepowered.com/nuclear-fit/race-for-a-reason/): We are proud to support Haven House Children’s Hospice in Woodford Green and are asking our Nuclear Fit competitors to... - [Nuclear Fit League](https://nuclearessex26.wpenginepowered.com/nuclear-fit/nuclear-fit-league/): Has your team got what it takes to be crowned Nuclear Fit league champions 2026? - [Nuclear Fit Training](https://nuclearessex26.wpenginepowered.com/nuclear-fit/nuclear-fit-training/): Need some preparation ahead of Nuclear Fit? Don’t worry, we have regular training sessions designed to familiarise you with the... - [Nuclear Mud Tribe Photos](https://nuclearessex26.wpenginepowered.com/nuclear-mud-tribe/nuclear-mud-tribe-photos/): Browse through the photos and videos from previous events - [Nuclear Races](https://nuclearessex26.wpenginepowered.com/nuclear-races/): Escape the everyday and get ready for the some award winning outdoor fitness action at Nuclear Races - our popular... - [Nuclear Rush](https://nuclearessex26.wpenginepowered.com/nuclear-races/nuclear-rush/): Prepare for the ultimate muddy obstacle course race at Nuclear Rush. Choose your challenge on our 6K or 12K courses;... - [Nuclear Fallout](https://nuclearessex26.wpenginepowered.com/nuclear-races/nuclear-fallout/): Experience the ultimate challenge at Nuclear Fallout, a true winter beast! Choose your distance on our award winning 6K or... - [British OCR Championships](https://nuclearessex26.wpenginepowered.com/nuclear-races/british-ocr-championships/): As the competitive highlight of our Nuclear Rush event, we’re proud to host the British OCR Championship here each year.... - [Nuclear Races Photos](https://nuclearessex26.wpenginepowered.com/nuclear-races/nuclear-races-photos/): Browse through the photos and videos from previous events - [Race Spectators](https://nuclearessex26.wpenginepowered.com/nuclear-races/race-spectators/): We encourage friends and family to come along to our events. There’s loads of obstacle action to watch, a rocking... - [Nuclear Races Vouchers](https://nuclearessex26.wpenginepowered.com/nuclear-races/nuclear-races-vouchers/): why not give the gift of adventure with one of our activity vouchers? - [Nuclear Races Marshals](https://nuclearessex26.wpenginepowered.com/nuclear-races/nuclear-races-marshals/): As one of our #marshalfamily you’ll be helping our Nuclear Race day be a great one! Marshalling may include: an... - [Mud Tribe Sisters](https://nuclearessex26.wpenginepowered.com/nuclear-mud-tribe/nuclear-mud-sisters/): Ready to gather your girls for an unforgettable adventure? Mud Tribe Sisters celebrates all that is brilliant about being female:... - [Mud Tribe Blast](https://nuclearessex26.wpenginepowered.com/nuclear-mud-tribe/nuclear-mud-blast/): Nuclear Mud Tribe Blast is the perfect next-level challenge for those looking to push their limits with an extra 1... - [Nuclear Fit](https://nuclearessex26.wpenginepowered.com/nuclear-fit/): Push your limits with Nuclear Fit, a unique outdoor fitness race designed to push you physically and mentally. This fitness... - [Nuclear Fit](https://nuclearessex26.wpenginepowered.com/nuclear-fit/nuclear-fit/): Push your limits with Nuclear Fit, a unique outdoor fitness race designed to push you physically and mentally. This fitness... - [Nuclear Fit Storm](https://nuclearessex26.wpenginepowered.com/nuclear-fit/nuclear-fit-storm/): Don’t like running? Nuclear Fit Storm is for you! With all of the fitness stations of Nuclear Fit but with... - [Nuclear Fit Relay](https://nuclearessex26.wpenginepowered.com/nuclear-fit/nuclear-fit-relay/): Challenge yourself and your teammates with Nuclear Fit Relay, a dynamic outdoor fitness race built for teams of three. Work... - [Nuclear Fit Rookies](https://nuclearessex26.wpenginepowered.com/nuclear-fit/nuclear-fit-rookies/): Push your limits with Nuclear Fit, a unique outdoor fitness race designed to push you physically and mentally. This fitness... - [Nuclear Fit Pro](https://nuclearessex26.wpenginepowered.com/nuclear-fit/nuclear-fit-pro/): Push your limits in the Nuclear Fit Pro Wave: the ultimate test for competitive athletes seeking a true measure of... - [Nuclear Mud Tribe](https://nuclearessex26.wpenginepowered.com/nuclear-mud-tribe/): Join the fun at Mud Tribe, a 5k muddy obstacle course run that’s suitable for all abilities. Designed with fun... - [Mud Tribe](https://nuclearessex26.wpenginepowered.com/nuclear-mud-tribe/mud-tribe/): Gather your tribe! Join the fun at Mud Tribe, a 5k muddy obstacle course run that’s suitable for all abilities.... - [Mud Tribe Blast](https://nuclearessex26.wpenginepowered.com/nuclear-mud-tribe/mud-tribe-blast/): Mud Tribe Blast Take your challenge further with the Nuclear Mud Tribe Blast. This is the perfect next-level challenge for... - [Nuclear Races Event Results](https://nuclearessex26.wpenginepowered.com/nuclear-races/nuclear-races-event-results/): Browse through the photos and videos from previous events - [Test Event Page](https://nuclearessex26.wpenginepowered.com/test-event-page/) - [Splash](https://nuclearessex26.wpenginepowered.com/nuclear-wild-forest/splash/): 90 minute technique, skills and race endurance training - [Father’s Day at Nuclear Essex](https://nuclearessex26.wpenginepowered.com/fathers-day/): Make memories in the great outdoors this Father’s Day. Sign up to get priority access to our open-air activities and... - [Easter 2K Obstacle Run](https://nuclearessex26.wpenginepowered.com/nuclear-wild-forest/easter-2k-obstacle-run/): Hop along for some cracking Easter fun for the whole family. - [International Women's Day at Nuclear Wild Forest](https://nuclearessex26.wpenginepowered.com/nuclear-wild-forest/wild-forest-womens-day/): Beat the post Christmas cabin fever and join us for a 2K woodland obstacle run. It’s a relaxed, fun vibe... - [BOS Youth Training](https://nuclearessex26.wpenginepowered.com/nuclear-wild-forest/bos-youth-training/): 2 hours of obstacle skills - [Nuclear Wild Forest 400m Sprint](https://nuclearessex26.wpenginepowered.com/nuclear-wild-forest/400m-sprint/): New for 2026 take on the 400m sprint course - [Easter Fun at Nuclear Essex](https://nuclearessex26.wpenginepowered.com/easter/): Join us for our annual Easter festivities. Sign up to receive seasonal updates, holiday inspiration, and exclusive news delivered to... - [Valentines Day events and activities at Nuclear Essex](https://nuclearessex26.wpenginepowered.com/valentines-day/): As well as our regular adventures, we also have a variety of special events and activities taking place throughout the... - [British OCR Champs Training](https://nuclearessex26.wpenginepowered.com/nuclear-wild-forest/british-ocr-champs-training/): 90 minute technique, skills and race endurance training - [Mothers Day events and activities at Nuclear Essex](https://nuclearessex26.wpenginepowered.com/mothers-day/): Forget the traditional Sunday routine and take Mother’s Day to new heights at Essex's leading multi-activity hub. Whether she’s conquering... - [Just Get Over It](https://nuclearessex26.wpenginepowered.com/nuclear-wild-forest/just-get-over-it/): Are you ready to beat the wall, swing on the mighty monkey bars, crawl through tyres, climb ramps and walls,... - [Half Term events and activities at Nuclear Essex](https://nuclearessex26.wpenginepowered.com/half-term/): Whether it’s the crisp air of February or the heat of October half-term, Nuclear is the ultimate destination for kids... - [Contact Us (TEST)](https://nuclearessex26.wpenginepowered.com/contact-us-test/): Got a question about one of our services? Or perhaps want to organise a party or private event? No matter... - [Cookie Policy (UK)](https://nuclearessex26.wpenginepowered.com/cookie-policy-uk/) - [Newsletter sign Up](https://nuclearessex26.wpenginepowered.com/sign-up/): Review our general booking terms and conditions for crucial information regarding: Payment deadlines, participant cancellation and rescheduling policies, and any... - [test indexer](https://nuclearessex26.wpenginepowered.com/test-indexer/): Event Type Select... Obstacle Race5k obstacle courseTrainingThemed EventActivityFunctional Fitness Race - [Nuclear Bunker 3D Model](https://nuclearessex26.wpenginepowered.com/nuclear-bunker/3dmodel/): Hidden beneath the calm of rural Essex, set deep into the county's beautiful countryside, lies the Kelvedon Hatch Secret Nuclear... - [Halloween blackout trick or treat](https://nuclearessex26.wpenginepowered.com/nuclear-wild-forest/halloween-blackout-trick-or-treating/): Experience Halloween like never before with a muddy obstacle twist. The 90 minute Halloween Blackout event combines the thrill of... - [Striders](https://nuclearessex26.wpenginepowered.com/nuclear-wild-forest/striders/): Nuclear Striders is a small friendly running club, based at Wild Forest within the Nuclear Races estate. We welcome runners... - [Testimonials](https://nuclearessex26.wpenginepowered.com/testimonials/): Read the reviews and testimonials from a variety of participants from parents and children to corporates and larger groups - [High Ropes in the Dark](https://nuclearessex26.wpenginepowered.com/nuclear-adventures/high-ropes-in-the-dark/): Experience the thrill of Nuclear High Ropes at night! Open to ages 6+, this illuminated ropes course offers a unique... - [What's On at Nuclear Essex](https://nuclearessex26.wpenginepowered.com/whats-on-at-nuclear-essex/): As well as our regular adventures, we also have a variety of special events and actvities taking place throughout the... - [Nuclear Essex Vouchers](https://nuclearessex26.wpenginepowered.com/vouchers/): Our vouchers make a great gift for any occasion. Why not give the gift of memories rather than simply more... - [Nuclear Wild Forest Vouchers](https://nuclearessex26.wpenginepowered.com/nuclear-wild-forest/vouchers/): A Gift Voucher from Wild Forest makes a really unique & memorable present to buy for someone as a special... - [Thank you](https://nuclearessex26.wpenginepowered.com/thank-you/): Thank you ! Thank you for your booking. You will receive various emails with details and confirmation. In the meantime... - [Corporates](https://nuclearessex26.wpenginepowered.com/corporates/): Bring your team together with unforgettable experiences at Nuclear Essex. From muddy obstacle challenges and outdoor adventures to unique meeting... - [Parties](https://nuclearessex26.wpenginepowered.com/parties/): Our outdoor, active parties are made for anyone who wants to celebrate big! Packed with fun, energy, and adventure, they’re... - [Charities](https://nuclearessex26.wpenginepowered.com/charities/): If you are a charitable organisation or wish to fundraise for a good cause, we can work together to create... - [Clubs](https://nuclearessex26.wpenginepowered.com/clubs/): Trade the routine for the rugged: at Nuclear Essex, clubs and groups can experience unforgettable outdoor adventures packed with mud,... - [Hen & Stag Parties](https://nuclearessex26.wpenginepowered.com/hen-stag-parties/): Get ready to unleash your wild side! From treetop adventures and muddy obstacle mayhem to epic axe throwing, our outdoor... - [Booking Terms and Conditions](https://nuclearessex26.wpenginepowered.com/terms-conditions/): Review our general booking terms and conditions for crucial information regarding: Payment deadlines, participant cancellation and rescheduling policies, and any... - [Entry](https://nuclearessex26.wpenginepowered.com/nuclear-bunker/entry/): Discover a great value day out in Essex to the unique setting that is the Kelvedon Hatch Secret Nuclear Bunker,... - [Company](https://nuclearessex26.wpenginepowered.com/company/): At Nuclear Essex, we offer exciting outdoor adventures that challenge and inspire. From obstacle courses to team-building activities, participants of... - [Team](https://nuclearessex26.wpenginepowered.com/team/): Our experienced team brings together a range of skills, qualifications and specialisms across Nuclear Essex. With exceptional enthusiasm and a... - [Careers and Jobs](https://nuclearessex26.wpenginepowered.com/careers/): Want to join an award winning team and do something that you love, every single day? Nuclear Essex could be... - [Awards and Accreditation](https://nuclearessex26.wpenginepowered.com/awards-accreditation/): We're proud to be one of the most accredited and award-winning outdoor adventure providers in the UK. Take a look... - [Commercial](https://nuclearessex26.wpenginepowered.com/commercial/): Partnering with Nuclear Essex offers your business a unique opportunity to connect with thousands of active, engaged participants across the... - [Safeguarding](https://nuclearessex26.wpenginepowered.com/safeguarding/): Nuclear Races Ltd acknowledges the duty of care to safeguard and promote the welfare of children and is committed to... - [Sustainability](https://nuclearessex26.wpenginepowered.com/sustainability/): At Nuclear Essex, we're committed to working with what nature gave us: the local Essex countryside, the natural terrain and... - [Pay and Play](https://nuclearessex26.wpenginepowered.com/nuclear-wild-forest/pay-and-play/): Have an adventure on the obstacles at Nuclear Wild Forest! Have a go as an individual, testing your skills on... - [Obstacle Taster](https://nuclearessex26.wpenginepowered.com/nuclear-wild-forest/obstacle-taster/): If you like the idea of an outdoor obstacle course race but aren't sure what to expect, our Obstacle Taster... - [Axe Throwing](https://nuclearessex26.wpenginepowered.com/nuclear-wild-forest/axe-throwing/): Tucked beneath a canopy of trees, our three lane, multi target axe throwing range is the perfect place to test... - [Bobble Hat Run](https://nuclearessex26.wpenginepowered.com/nuclear-wild-forest/bobble-hat-run/): Beat the post Christmas cabin fever and join us for a 2K woodland obstacle run. It’s a relaxed, fun vibe... - [Parties](https://nuclearessex26.wpenginepowered.com/nuclear-wild-forest/parties/): Looking for an unforgettable outdoor party venue with a difference? Our parties at Nuclear Wild Forest are the ultimate outdoor... - [Find Us](https://nuclearessex26.wpenginepowered.com/find-us/): Nuclear Essex is located in Brentwood, Essex just 15 minutes from the A12, M25 and M11. - [Schools](https://nuclearessex26.wpenginepowered.com/schools/): Break free from the classroom for a fun outdoor adventure, enrichment day, end of year celebration, residential or school trip.... - [Contact Us](https://nuclearessex26.wpenginepowered.com/contact-us/): Got a question about one of our services? Or perhaps want to organise a party or private event? No matter... - [Accessibility statement](https://nuclearessex26.wpenginepowered.com/accessibility-statement/): Nuclear Essex is committed to ensuring digital accessibility for people with disabilities. We are continually improving the user experience for... - [Search](https://nuclearessex26.wpenginepowered.com/search/): Search - [History](https://nuclearessex26.wpenginepowered.com/nuclear-bunker/history/): Come and witness the three lives of the bunker starting with its role as an RAF ROTOR Station, then a... - [Schools](https://nuclearessex26.wpenginepowered.com/nuclear-bunker/schools/): Schools The Kelvedon Hatch Secret Nuclear Bunker offers a fascinating and educational experience for schools, colleges, and universities – bringing... - [Parties & Groups](https://nuclearessex26.wpenginepowered.com/nuclear-bunker/parties-groups/): Looking for a completely unique venue for a day out, an educational visit or even a social event? The Kelvedon... - [Private Hire & Filming](https://nuclearessex26.wpenginepowered.com/nuclear-bunker/private-hire-filming/): Need a filming or photography location in the heart of Essex which also encapsulates Cold War history? The Kelvedon Hatch... - [Nuclear Bunker Gallery](https://nuclearessex26.wpenginepowered.com/nuclear-bunker/gallery/): Hidden beneath the calm of rural Essex, set deep into the county's beautiful countryside, lies the Kelvedon Hatch Secret Nuclear... - [Safety](https://nuclearessex26.wpenginepowered.com/nuclear-adventures/safety/): Before starting your session, you will be greeted by your instructor who will confirm you have read a copy of... - [Nuclear Adventures Vouchers](https://nuclearessex26.wpenginepowered.com/nuclear-adventures/vouchers/): why not give the gift of adventure with one of our activity vouchers? - [Digital Style Guide](https://nuclearessex26.wpenginepowered.com/digital-style-guide/): Nuclear ESSEX Nuclear Essex is the overarching brand and includes Nuclear Races, Nuclear Fit, Nuclear Mud Tribe, Nuclear Adventures, Nuclear... - [Obstacles](https://nuclearessex26.wpenginepowered.com/nuclear-wild-forest/obstacles/): We have a large selection of technically challenging and fun obstacles to learn and refine your OCR skills on. Explore... - [Groups](https://nuclearessex26.wpenginepowered.com/groups/): Bring your school, youth group, club or sports team to Nuclear Essex for an unforgettable day of adventure, teamwork and... - [Little Monkeys](https://nuclearessex26.wpenginepowered.com/nuclear-adventures/little-monkeys/): Ready to take to the skies - but maybe not too high just yet? Our High Ropes Little Monkeys sessions... - [Quiet Sessions](https://nuclearessex26.wpenginepowered.com/nuclear-adventures/quiet-sessions/): Take part in a truly personal adventure where calm meets challenge! Our exclusive Quiet Sessions are specially created for individuals... - [Secret Nuclear Bunker](https://nuclearessex26.wpenginepowered.com/nuclear-bunker/): Take a step back in time to the Cold War era with a visit to the Kelvedon Hatch Secret Nuclear... - [Fitness Classes](https://nuclearessex26.wpenginepowered.com/nuclear-wild-forest/fitness-classes/): Join one of our range of weekly outdoor fitness classes at Nuclear Wild Forest, which are suitable for all abilities.... - [High Ropes](https://nuclearessex26.wpenginepowered.com/nuclear-adventures/high-ropes/): Take on a high ropes adventure at our challenging course where you’ll navigate thrilling obstacles and ziplines high in the... - [Zip Trek](https://nuclearessex26.wpenginepowered.com/nuclear-adventures/zip-trek/): Discover the ultimate treetop adventure at our epic zipwire course. Soar through the air on a series of breathtaking zipwires... - [Axe Throwing](https://nuclearessex26.wpenginepowered.com/nuclear-adventures/axe-throwing/): Unleash your inner warrior at Nuclear Adventures axe throwing venue. Our four-lane outdoor range provides the perfect setting for you... - [Big Drop](https://nuclearessex26.wpenginepowered.com/nuclear-adventures/big-drop/): Looking for a high adrenaline add on to your Nuclear High Ropes experience? If so, the Big Drop is the... - [Parties](https://nuclearessex26.wpenginepowered.com/nuclear-adventures/parties/): Nuclear Adventures is the ideal location for a fun, exciting & adventurous birthday party. Our dedicated team is on hand... - [Adventures](https://nuclearessex26.wpenginepowered.com/nuclear-adventures/): Experience the greatest outdoor adventure at Nuclear Adventures. Take on our thrilling high ropes or Zip trek course where you'll... - [Wild Forest](https://nuclearessex26.wpenginepowered.com/nuclear-wild-forest/): Escape the ordinary, get outdoors, and let your inner adventurer free at Nuclear Wild Forest. It’s home to an exciting... - [FAQs](https://nuclearessex26.wpenginepowered.com/faq/): Find quick answers to some common frequently asked questions we get asked. - [News](https://nuclearessex26.wpenginepowered.com/news/): Tales from our trails: keep up to date with all of our latest news and any insight we may have... --- ## Posts - [From the Sky to the Secret Bunker: A Nuclear Day Out](https://nuclearessex26.wpenginepowered.com/news/from-the-sky-to-the-secret-bunker-a-nuclear-day-out/): Take a look at some of the top activities on offer at Nuclear Essex. - [5 reasons you can’t miss Nuclear Rush 2026 – Essex’s Epic Mud Run](https://nuclearessex26.wpenginepowered.com/5-reasons-you-cant-miss-nuclear-rush-2026-essexs-epic-mud-run/): If you’re looking for a challenge, a bit of adventure and a lot of mud, Nuclear Rush is the perfect... - [The Unfiltered Alternative to Hyrox](https://nuclearessex26.wpenginepowered.com/unfiltered-alternative-to-hyrox/): As hybrid fitness racing grows in popularity, Nuclear Fit offers a tougher, more accessible outdoor alternative — combining trail runs,... - [Preparing for a Hybrid Trail Fitness Race](https://nuclearessex26.wpenginepowered.com/preparing-for-a-hybrid-trail-fitness-race/): In this guide, we break down how to train effectively, from building your running base to mastering workouts under fatigue,... - [Brentwood Chamber of Commerce Business Awards 2025](https://nuclearessex26.wpenginepowered.com/news/brentwood-chamber-of-commerce-business-awards-2025/): We’re honoured to have won both Business of the Year and Customer Service Award at the Brentwood Chamber of Commerce... - [Nuclear Fit had over 1,000 competitors at September event!](https://nuclearessex26.wpenginepowered.com/nuclear-fit-has-over-1000-competitors-at-september-event/): More than 1,000 competitors descended on Kelvedon Hatch this September for Nuclear Fit’s largest event to date. What began as... - [Water safety training](https://nuclearessex26.wpenginepowered.com/water-safety-training/): Our team recently completed water safety training with the experts at Swim Safety Ltd, ensuring everyone across Nuclear Essex is... - [Neurodiversity awareness training at Nuclear Essex](https://nuclearessex26.wpenginepowered.com/wf-and-na-complete-neurodiversity-awareness-training/): Our teams at Nuclear Wild Forest and Nuclear Adventures recently completed Neurodiversity Awareness Training, gaining valuable insights and practical tools... - [Brentwood Chamber of Commerce Business Awards 2024](https://nuclearessex26.wpenginepowered.com/brentwood-business-awards-2024/): We’re proud to be named Best Small/Medium Business and finalists for Best Customer Service at the Brentwood Chamber of Commerce... --- ## Events - [Splash Plus](https://nuclearessex26.wpenginepowered.com/event/splash-plus/): Cool down this summer in our Lake Zone, packed with water obstacles and slides designed for all ages. - [Mud Tribe](https://nuclearessex26.wpenginepowered.com/event/mud-tribe-2/): Gather your tribe! Join the fun at Mud Tribe, a 5km muddy obstacle course run that’s suitable for all abilities. - [Fallout](https://nuclearessex26.wpenginepowered.com/event/fallout-2/): Tackle the Nuclear winter beast! Choose from our multi award winning 6K or 12K lapped course. Whether you’re a newbie,... - [High Ropes](https://nuclearessex26.wpenginepowered.com/event/high-ropes-2/): Take on a high ropes adventure at our challenging course where you’ll navigate thrilling obstacles and zip lines high in... - [Ladies Fitness](https://nuclearessex26.wpenginepowered.com/event/ladies-fitness-2/): Ladies Fitness Class A fun, empowering outdoor fitness class for ladies. - [Splash](https://nuclearessex26.wpenginepowered.com/event/splash-3/): Cool down this summer in our Lake Zone, packed with water obstacles and slides designed for all ages. - [Angel Knife Taster](https://nuclearessex26.wpenginepowered.com/event/angel-knife-taster/): Ready to hit the bullseye of our axe throwing range? Test your skills on our three lane, multi target range! - [Bespoke 1-2-1 or small group training](https://nuclearessex26.wpenginepowered.com/event/bespoke-1-2-1-or-small-group-training/): Looking for 1-2-1 training or have a small group that would like to train together? If so, we can tailor... - [Fit - Rookies (12-15)](https://nuclearessex26.wpenginepowered.com/event/fit-rookies-12-15/): A step up in intensity, this category is designed for older racers ready for more of a challenge and strengthen... - [Fit - Doubles](https://nuclearessex26.wpenginepowered.com/event/fit-doubles/): Want to experience the adrenaline of Nuclear Fit alongside a friend or training buddy? Fit Doubles is for you! Your... - [Fit Storm - Doubles](https://nuclearessex26.wpenginepowered.com/event/fit-storm-doubles/): Prefer to compete as a pair? No problem, our doubles race is for you! The race is the same format... - [Fit Storm - Individuals](https://nuclearessex26.wpenginepowered.com/event/fit-storm-individuals/): As an individual participant, you’ll have 45 minutes to complete as many of the functional fitness stations back to back... - [Fit - Relay](https://nuclearessex26.wpenginepowered.com/event/fit-relay/): If teamwork is your thing, then Fit Relay is for you! Perfect for gym buddies, this is our classic Nuclear... - [Fit - Pro](https://nuclearessex26.wpenginepowered.com/event/fit-pro/): Push your limits in the Nuclear Fit Pro Wave, the ultimate test for competitive athletes ready to go all in.... - [Fit - Rookies (9-11)](https://nuclearessex26.wpenginepowered.com/event/fit-rookies-9-11/): Designed as an introduction to fitness racing, this age category focuses on building confidence, coordination and love for exercise. Lighter... - [Fallout – 12K](https://nuclearessex26.wpenginepowered.com/event/fallout-12km/): Double the distance, double the challenge, Nuclear Fallout 12km is an endurance-packed obstacle challenge designed for seasoned and adventurous racers.... - [Fit - Individuals](https://nuclearessex26.wpenginepowered.com/event/fit-individuals/): Nuclear Fit is the ultimate outdoor fitness race to test your body and mind. Across six 1km trail runs, you’ll... - [Fallout Oblivion MAXX - 24K+](https://nuclearessex26.wpenginepowered.com/event/fallout-oblivion-maxx-24k/): The ultimate endurance obstacle challenge for seasoned and fearless racers! Covering rugged farmland, woodland, lakes, and muddy terrain over three... - [Fallout – 6K](https://nuclearessex26.wpenginepowered.com/event/fallout-6k-2027/): Nuclear Fallout 6km is a thrilling, mid-distance challenge designed for those looking for a full-on obstacle adventure. Participants tackle rugged... - [Quiet Sessions](https://nuclearessex26.wpenginepowered.com/event/quiet-sessions/): Find your calm among the treetops. We’ve turned down the volume and turned up the peace – no background music,... - [Pay and Play](https://nuclearessex26.wpenginepowered.com/event/pay-and-play/): Our Pay and Play sessions allow you to take on our signature obstacles and challenges at your own pace. Whether... - [Obstacle Taster - 3K](https://nuclearessex26.wpenginepowered.com/event/obstacle-taster-3k/): Our 3km Obstacle Taster is aimed at those wanting to be challenged a little more and will jog / run... - [Obstacle Taster - 2K](https://nuclearessex26.wpenginepowered.com/event/obstacle-taster-2k/): The 2km Obstacle Taster is designed for anyone aged 6+ years who want to experience a short, enjoyable introduction to... - [Rush – 12K](https://nuclearessex26.wpenginepowered.com/event/rush-12k-2027/): Double the distance, double the fun. Take on the full 12km course and every world-class obstacle. Taking you deep into... - [Rush – 6K](https://nuclearessex26.wpenginepowered.com/event/rush-6k/): The 6 km course takes you through muddy farmland, woodlands and lakes, and is complete with approximately 40+ obstacles to test... - [Dad's Go Free on Father's Day](https://nuclearessex26.wpenginepowered.com/event/dads-go-free-on-fathers-day-2/): Make Father’s Day one to remember with a fun outdoor experience at Wild Forest — Dad goes free when accompanied... - [Angel Knife Experience](https://nuclearessex26.wpenginepowered.com/event/angel-knife-taster-session/): Ready to hit the bullseye of our axe throwing range? Test your skills on our three lane, multi target range! - [Little Monkeys](https://nuclearessex26.wpenginepowered.com/event/little-monkeys/): Take on a high ropes adventure at our challenging course where you’ll navigate thrilling obstacles and zip lines high in... - [Halloween Blackout](https://nuclearessex26.wpenginepowered.com/event/halloween-blackout-trick-or-treat/): 90 minutes of halloween themed day and nighttime muddy obstacle course with actors, and decorations. - [Secret Nuclear Bunker Tour](https://nuclearessex26.wpenginepowered.com/event/secret-nuclear-bunker-tour/): Discover a great value day out in Essex to the unique setting that is the Kelvedon Hatch Secret Nuclear Bunker,... - [Axe Throwing](https://nuclearessex26.wpenginepowered.com/event/axe-throwing-2/): A perfect party or excuse to get your mates together, in our full axe and knife throwing experience you’ll get... - [Zip Trek](https://nuclearessex26.wpenginepowered.com/event/zip-trek/): Discover the ultimate treetop adventure at our epic high ropes and zipwire course. - [Full Axe Throwing](https://nuclearessex26.wpenginepowered.com/event/axe-throwing/): Ready to hit the bullseye of our axe throwing range? Test your skills on our three lane, multi target range! - [Big Drop](https://nuclearessex26.wpenginepowered.com/event/big-drop/): Looking for a high adrenaline add on to your Nuclear High Ropes experience? If so, the Big Drop is perfect... - [OCR Racers](https://nuclearessex26.wpenginepowered.com/event/ocr-racers/): If you’re an experienced OCR racer, our intermediate to advanced outdoor fitness classes are the perfect way to build on... - [Obstacle Bootcamp](https://nuclearessex26.wpenginepowered.com/event/splash/): Join our obstacle bootcamp fitness class– no experience needed and everyone is welcome. Your first class is FREE – just... --- ## Offers - [UNLIMITED ADVENTURE: 2026 Summer Season Pass](https://nuclearessex26.wpenginepowered.com/offer/unlimited-adventure-2026-summer-season-pass/): One Pass. Unlimited Thrills. Your Best Summer Ever at Nuclear Adventures. - [Dads Goes Free on Father's Day](https://nuclearessex26.wpenginepowered.com/offer/dads-goes-free-on-fathers-day/): Make Father’s Day one to remember with a fun outdoor experience at Wild Forest — Dad goes free when accompanied... - [Nuclear Fit group offers!](https://nuclearessex26.wpenginepowered.com/offer/fit-group-offers/): We’re inviting gyms, bootcamps, corporate teams and fitness communities across the country to partner with Nuclear Fit. - [Dads Go Free! The Ultimate Father’s Day Out](https://nuclearessex26.wpenginepowered.com/offer/dads-go-free-the-ultimate-fathers-day-out/): Give Dad the gift of adventure. Dads get in absolutely free on Father's Day! - [Bunker Group Discounts](https://nuclearessex26.wpenginepowered.com/offer/bunker-group-discounts/): Gather your allies for a deep-dive into Cold War history. Secure entry for your group at our special tactical rates: - [EARN THE TREBLE FIT MEDAL: Complete All Three Nuclear Fit Events](https://nuclearessex26.wpenginepowered.com/offer/treble-fit/): Three events. One elite medal. Consistency never looked so good. - [MUD TRIBE TEAM REWARDS: FREE Parking & £50 Voucher!](https://nuclearessex26.wpenginepowered.com/offer/mud-tribe-team-rewards-free-parking-50-vouchers/): Gather your tribe! Book a 5k team wave with 20+ members for FREE parking, or hit 30+ for a £50... - [15% OFF Pre-Christmas Sale: Gear Up for the Holidays!](https://nuclearessex26.wpenginepowered.com/offer/15-off-pre-christmas-sale-gear-up-for-the-holidays/): Start your Christmas shopping early! Get 15% OFF all Nuclear Essex merchandise and gear in our Pre-Christmas Shop Sale. - [10% OFF Group Bookings: Mobilise Your Nuclear Adventures Team](https://nuclearessex26.wpenginepowered.com/offer/group-discount/): Secure a single booking for 20 or more participants in Nuclear Adventures standard activities and automatically take 10% OFF the... - [FREE Birthday Child Space: The Ultimate Nuclear Adventure!](https://nuclearessex26.wpenginepowered.com/offer/birthday-child-goes-free/): Book an adrenaline-fueled Nuclear Adventures party (10+ participants) and the Birthday Child's space is completely FREE! - [TEACHERS GO FREE: Bring Your School Group to Nuclear Essex](https://nuclearessex26.wpenginepowered.com/offer/teachers-go-free/): Book your next school trip to Nuclear Adventures or Nuclear Wild Forest, and all accompanying teachers/supervisors go FREE! - [NUCLEAR RACES TEAM DISCOUNT: 10% OFF & Free Places](https://nuclearessex26.wpenginepowered.com/offer/nuclear-races-group-discount/): Rally your team! Groups of 10+ get 10% OFF all entries. Hit 30, 60, or 100 members for FREE places... - [FREE WILD FOREST INDUCTION with Your Nuclear Races Ticket](https://nuclearessex26.wpenginepowered.com/offer/free-wild-forest-induction/): Got a Nuclear Race ticket? Get ONE FREE Wild Forest obstacle course induction to learn tips, master safety, and train... - [DryRobe Upgrade: Get a FREE Event Ticket](https://nuclearessex26.wpenginepowered.com/offer/adult-dry-robe-offer/): Purchase a co-branded Nuclear DryRobe at checkout and get a FREE entry for an eligible Nuclear Race, Rookie event, or... - [The ROOKIE MUDALLION: Earn a HUGE Blinging Medal!](https://nuclearessex26.wpenginepowered.com/offer/the-rookie-mudallion/): Enter 2 of our qualifying children's races in a calendar year and earn the free, absolutely HUGE, blinging Rookie Mudallion! - [15% OFF: Multi-Activity Discount at Nuclear Adventures](https://nuclearessex26.wpenginepowered.com/offer/15-off-2-or-more-activities/): Double the challenge, less of the cost! Book 2 or more activities at Nuclear Adventures and automatically save 15% on... - [EARN THE MIGHTY MUDALLION: Complete the Ultimate Nuclear Challenge](https://nuclearessex26.wpenginepowered.com/offer/mudallion-2026/): Prove your commitment: Complete three totally different qualifying Nuclear Races events in one year to earn the legendary, exclusive Mighty... - [Pick & Mix Package: Save on 3+ Nuclear events](https://nuclearessex26.wpenginepowered.com/offer/nuclear-pick-n-mix-package/): Build your ultimate race calendar! Select 3+ Nuclear Races and/or Nuclear Fit events for a discounted rate with interest-free Clearpay. --- ## FAQs - [What is the adult to child ratio at Nuclear Races and Nuclear Mud Tribe?](https://nuclearessex26.wpenginepowered.com/faq/what-is-the-adult-to-child-ratio-at-nuclear-races-and-nuclear-mud-tribe/): Nuclear Races Rookies require 1 accompanying adult to 1 child (under age 15). The adult is free and runs alongside... - [Do I need photo ID to sign in?](https://nuclearessex26.wpenginepowered.com/faq/do-i-need-photo-id-to-sign-in/): For Nuclear Races, Nuclear Fit and Mud Tribe events, all racers must bring a form of photo ID to sign... - [How does the chip timing work?](https://nuclearessex26.wpenginepowered.com/faq/how-do-the-race-timing-chips-work/): You will be given the timing chip at registration and must wear it as instructed. It will be taken off... - [What should I wear?](https://nuclearessex26.wpenginepowered.com/faq/what-should-i-wear-2/): Wear closed toe, flat, sturdy shoes, trainers are ideal. Remove all jewellery. Glasses will need to be held on with... - [How long does a visit to the Secret Nuclear Bunker take?](https://nuclearessex26.wpenginepowered.com/faq/how-long-does-a-visit-take/): Visits usually last between 1–2 hours depending on your level of interest. - [Is the Secret Nuclear Bunker accessible?](https://nuclearessex26.wpenginepowered.com/faq/is-the-secret-nuclear-bunker-accessible/): The bunker has accessibility limitations due to its historic design. - [How do I book tickets for the Secret Nuclear Bunker?](https://nuclearessex26.wpenginepowered.com/faq/how-do-i-book-tickets-for-the-secret-nuclear-bunker/): No need to book in advance, payment can be made onsite - [Can I change my booking or transfer my ticket?](https://nuclearessex26.wpenginepowered.com/faq/can-i-change-my-booking-or-transfer-my-ticket/): Ticket transfers and changes are possible via your booking dashboard or by contacting us, depending on your race type and... - [What food and drink is available at The Bunker?](https://nuclearessex26.wpenginepowered.com/faq/what-food-and-drink-is-available-at-the-bunker/): The Bunker has a small canteen serving hot drinks, cakes, snacks, and sandwiches. - [Can I hire The Bunker privately?](https://nuclearessex26.wpenginepowered.com/faq/can-i-hire-the-bunker-privately/): The Bunker is available for private hire for events and experiences. - [Can The Bunker be used as a filming location?](https://nuclearessex26.wpenginepowered.com/faq/can-the-bunker-be-used-as-a-filming-location/): The Bunker is available for filming and photography projects. - [What is The Bunker?](https://nuclearessex26.wpenginepowered.com/faq/what-is-the-bunker/): The Bunker is a Cold War-era underground nuclear bunker open to the public as a museum and event venue. - [What is the Bunker Below?](https://nuclearessex26.wpenginepowered.com/faq/what-is-the-bunker-below/): The Bunker Below is an immersive Halloween horror experience set 125 feet underground in a real Cold War-era nuclear bunker... - [Will there be a water station out on course?](https://nuclearessex26.wpenginepowered.com/faq/will-there-be-a-water-station-out-on-course/): There will be at least one main water station on the course. - [Can I run with a GoPro?](https://nuclearessex26.wpenginepowered.com/faq/can-i-run-with-a-gopro/): You can run with a GoPro, but it is at your own risk. We recommend taking a picture of yourself... - [Will food and drink be available after the race?](https://nuclearessex26.wpenginepowered.com/faq/will-food-and-drink-be-available-after-the-race/): Food and drink vendors will be available in the event village, and they accept both cash and credit card payments. - [Are the events wheelchair accessible?](https://nuclearessex26.wpenginepowered.com/faq/are-the-events-wheelchair-accessible/): We welcome everyone to our events. However, they are located on a working farm so the ground is uneven. For... - [Can I run if I am pregnant or recently postpartum?](https://nuclearessex26.wpenginepowered.com/faq/can-i-run-if-i-am-pregnant-or-recently-postpartum/): For safety reasons, we advise against participating while pregnant. Please seek medical clearance before taking part after giving birth. - [Is there a deadline to sign up to a race?](https://nuclearessex26.wpenginepowered.com/faq/is-there-a-deadline-to-sign-up-to-a-race/): You can buy tickets online up until the day of the race, subject to availability. - [Can I wear fancy dress or costumes?](https://nuclearessex26.wpenginepowered.com/faq/can-i-wear-fancy-dress-or-costumes/): We love seeing participants racing in fancy dress and costumes! Just keep in mind that you’ll be climbing obstacles and... - [Are drones allowed?](https://nuclearessex26.wpenginepowered.com/faq/are-drones-allowed/): Drones are not allowed unless agreed with the Event Management. - [Can I buy gift vouchers for friends and family?](https://nuclearessex26.wpenginepowered.com/faq/can-i-buy-gift-vouchers-for-friends-and-family/): Yes — gift vouchers are available to buy online and make the perfect present for adventure lovers. - [What is included with my race ticket?](https://nuclearessex26.wpenginepowered.com/faq/what-is-included-with-my-mud-tribe-ticket/): Your ticket includes a medal, hot water washdown, heated changing tents, and more — everything you need for an epic... - [How can I train for Nuclear Fit?](https://nuclearessex26.wpenginepowered.com/faq/how-can-i-train-for-nuclear-fit/): Join our regular Nuclear Fit training classes or our 6-week race prep programme to improve your technique, strength, and transitions. - [How can I buy the Nuclear Fit Merch?](https://nuclearessex26.wpenginepowered.com/faq/how-can-i-buy-the-nuclear-fit-merch/): You can buy this online or on the day. The Nuclear Essex shop will be on site at each event... - [Who can participate at Nuclear Fit?](https://nuclearessex26.wpenginepowered.com/faq/who-can-participate-at-nuclear-fit/): Everybody who is 16 and older can participate. - [What are the different divisions?](https://nuclearessex26.wpenginepowered.com/faq/what-are-the-different-divisions/): Nuclear Fit offers Individual, Doubles, and Pro divisions, plus Storm races for a purely fitness-focused challenge. - [Is there a Nuclear Fit rule book?](https://nuclearessex26.wpenginepowered.com/faq/is-there-a-nuclear-fit-rule-book/): Here is your rule book: INSERT LINK - [What are the different fitness stations at Nuclear Fit?](https://nuclearessex26.wpenginepowered.com/faq/what-are-the-different-fitness-stations-in-nuclear-fit/): Nuclear Fit features a range of strength and endurance stations including tyre flips, carries, lifts, and throws tailored for men... - [Will there be prizes?](https://nuclearessex26.wpenginepowered.com/faq/will-there-be-prizes/): Finishers receive medals, top racers get trophies, and extra rewards are available for completing challenges. - [What are the age categories for Nuclear Fit?](https://nuclearessex26.wpenginepowered.com/faq/what-are-the-age-categories-for-nuclear-fit/): Nuclear Fit uses chip timing to rank competitors within age categories from U24 to 85–89 years. - [What are the race day rules?](https://nuclearessex26.wpenginepowered.com/faq/what-are-the-race-day-rules/): Runners must follow all race regulations, complete workouts in the correct order, use the appropriate equipment, and finish within the... - [What colour fitness station equipment should I use?](https://nuclearessex26.wpenginepowered.com/faq/what-colour-fitness-station-equipment-should-i-use/): Yellow is for ladies individuals and ladies doubles. Blue is for individual men, mens doubles, and mixed doubles. - [What is the Treble Fit?](https://nuclearessex26.wpenginepowered.com/faq/what-is-the-treble-fit/): Race all three events within a single year and earn the prestigious Treble Fit medal. Your qualifying events can include... - [How can I raise money for a charity?](https://nuclearessex26.wpenginepowered.com/faq/how-can-i-raise-money/): Sign up to one of our races, create your own bespoke event, or design a Wild Forest mud run —... - [What training do the Instructors have?](https://nuclearessex26.wpenginepowered.com/faq/what-training-do-the-instructors-have/): The lead instructors are all: Level 2 Gym Instructors or Personal Trainers Level 3 First Aid at Work Swim Safety... - [Are spectators allowed out on the course?](https://nuclearessex26.wpenginepowered.com/faq/are-spectators-allowed-out-on-the-course/): At Nuclear Wild Forest, group bookings may bring a maximum of two spectators onto the course. This helps us ensure... - [What facilities are available at Nuclear Wild Forest?](https://nuclearessex26.wpenginepowered.com/faq/what-facilities-are-available/): The main building houses toilets, a disabled toilet, hot indoor wash-down facilities, and changing rooms. There are tea and coffee... - [What do I need to bring?](https://nuclearessex26.wpenginepowered.com/faq/what-do-i-need-to-bring/): Bring photo ID and your check-in email. We will send the check-in pass 3 weeks before the event and again... - [What should I wear?](https://nuclearessex26.wpenginepowered.com/faq/what-should-i-wear-races/): Wear fast-drying, breathable clothing and trail trainers with good grip. Avoid cotton and footwear without traction. - [How long does it take to get round the Nuclear Races course?](https://nuclearessex26.wpenginepowered.com/faq/how-long-does-it-take-to-get-round-the-nuclear-races-course/): RUSH 6K approx. 1. 5-2. 5 hrs 12K approx. 2-3 hrs FALLOUT 6K approx. 1-2. 5 hrs 12K approx. 2-3.... - [How long does it take to get round the Mud Tribe course?](https://nuclearessex26.wpenginepowered.com/faq/how-long-does-it-take-to-get-round-the-mud-tribe-course/): It will depend on your fitness ability. We would expect it to take you around 60-90 minutes to run 5K... - [Do I need to be super fit to take part at Nuclear Races?](https://nuclearessex26.wpenginepowered.com/faq/do-i-need-to-be-super-fit-to-take-part-at-nuclear-races/): Not at all! Nuclear Races is designed to challenge all abilities, ages and fitness levels. Whether you want to walk,... - [How can I prepare for Nuclear Races?](https://nuclearessex26.wpenginepowered.com/faq/how-can-i-prepare-for-nuclear-races/): Training for Nuclear Races gives you a full-body workout. Mix running, strength training, and mobility exercises to build endurance and... - [I’m booked to race the 12K – can I decide to do the 6K instead?](https://nuclearessex26.wpenginepowered.com/faq/im-booked-to-race-the-12k-can-i-decide-to-do-the-6k-instead/): If you’re signed up for the 12K, you can choose to switch to the 6K on race day. The 6K/12K... - [Do I need to be able to swim to take part in Nuclear Races?](https://nuclearessex26.wpenginepowered.com/faq/do-i-need-to-be-able-to-swim-to-take-part-in-nuclear-races/): Some swimming ability can help, but it is not essential. Buoyancy vests and trained water safety teams are available at... - [Can I skip obstacles during the race?](https://nuclearessex26.wpenginepowered.com/faq/can-i-skip-obstacles-during-the-race/): You can attempt as many or as few obstacles as you like, it’s your race and your challenge. There are... - [Do 6K and 12K runners start together? How will I know where to go?](https://nuclearessex26.wpenginepowered.com/faq/do-6k-and-12k-runners-start-together-how-will-i-know-where-to-go/): 6K and 12K runners start in the same wave and run together. The course split is well sign posted on... - [Is there a bag drop at Nuclear Races?](https://nuclearessex26.wpenginepowered.com/faq/is-there-a-bag-drop-at-nuclear-races/): There’s a free, staffed bag drop available. You’ll leave it before your race and collect it when you finish. Please... - [Can I camp onsite?](https://nuclearessex26.wpenginepowered.com/faq/can-i-camp-onsite-at-nuclear-races/): Free onsite camping is available. You can book at the time of registration or add it later via your booking... - [Is there a wash-down area and changing rooms after the race?](https://nuclearessex26.wpenginepowered.com/faq/is-there-a-wash-down-area-and-changing-rooms-after-the-race/): We have an outdoor hot water wash-down at the finish zone. Please follow the wash-down procedure to help us get... - [I’m having problems booking – what should I do?](https://nuclearessex26.wpenginepowered.com/faq/im-having-problems-booking-what-should-i-do/): If you’re having trouble making a booking, try switching to a different device or browser this often fixes common technical... - [What’s included with my Nuclear Races ticket?](https://nuclearessex26.wpenginepowered.com/faq/whats-included-with-my-nuclear-races-ticket/): Your ticket includes a finisher’s medal, car parking, photos, changing facilities, refreshments, camping, and more. - [What is the Mighty Mudallion Medal?](https://nuclearessex26.wpenginepowered.com/faq/what-is-the-mighty-mudallion-medal/): The Mighty Mudallion is our ultimate reward for those who take on and conquer three totally different Nuclear events in... - [Can I show my check-in pass at registration on my mobile?](https://nuclearessex26.wpenginepowered.com/faq/can-i-show-my-check-in-pass-at-registration-on-my-mobile/): Absolutely, you can bring your check-in pass on your phone or as a printed paper copy. Just make sure you’re... - [I haven’t received my email confirmation or check-in pass, what should I do?](https://nuclearessex26.wpenginepowered.com/faq/i-havent-received-my-email-confirmation-or-check-in-pass-what-should-i-do/): Check all email accounts you may have used to book your ticket (work, home etc. ) and don’t forget to... - [If I miss my wave start, can I join the next one?](https://nuclearessex26.wpenginepowered.com/faq/if-i-miss-my-wave-start-can-i-join-the-next-one/): If you miss your start wave, speak to registration to move you to the next available wave. Correct wristbands are... - [Where’s my race number?](https://nuclearessex26.wpenginepowered.com/faq/wheres-my-race-number/): We don’t use race numbers. Instead, you’ll receive a QR code in your check-in email, which you’ll use on race... - [Can my obstacle racing ticket be refunded?](https://nuclearessex26.wpenginepowered.com/faq/can-my-obstacle-racing-ticket-be-refunded/): We do not offer refunds, but you can transfer your ticket to another event or person up to 48 hours... - [How do I create a team?](https://nuclearessex26.wpenginepowered.com/faq/how-do-i-create-a-team/): Select the team option during booking and sign up as the Team Captain. You’ll create a team name and reserve... - [Why should I create a team?](https://nuclearessex26.wpenginepowered.com/faq/why-should-i-create-a-team/): Creating a team is one of the best ways to experience Nuclear Races. Here’s why: Discounted entry – Teams of... - [What’s the minimum team size?](https://nuclearessex26.wpenginepowered.com/faq/whats-the-minimum-team-size/): The minimum is 5 and there is no maximum. We offer a discount on Rush and Fallout Adults tickets only... - [Do all team members need to sign up at once?](https://nuclearessex26.wpenginepowered.com/faq/do-all-team-members-need-to-sign-up-at-once/): The Team Captain can reserve spaces for up to 30 days. Team members can join any time within that window... - [How can people join my team?](https://nuclearessex26.wpenginepowered.com/faq/how-can-people-join-my-team/): The Team Captains has been sent a team creation email which has the link for new team members to join.... - [How can I check who’s in my team?](https://nuclearessex26.wpenginepowered.com/faq/how-can-i-check-whos-in-my-team/): The Team Captain should open their team creation email. This email will show everyone currently registered in the team and... - [Can I change the wave time for my team?](https://nuclearessex26.wpenginepowered.com/faq/can-i-change-the-wave-time-for-my-team/): If you want to make any changes to a team entry you need to email races@nuclearessex. com - [How do I increase my team size after booking?](https://nuclearessex26.wpenginepowered.com/faq/how-do-i-increase-my-team-size-after-booking/): Email races@nuclearessex. com with your team name, race date, and number of extra spaces needed. If space is available in... - [Do you charge a spectator fee?](https://nuclearessex26.wpenginepowered.com/faq/do-you-charge-a-spectator-fee/): Rush Weekend: £5 entry per non-runner (cash or card). Children 12 years and under enter free. Mud Tribe and Fallout:... - [What is included in a child's race ticket?](https://nuclearessex26.wpenginepowered.com/faq/what-is-included-in-a-rookie-ticket/): Your ticket includes a Rookie Survivors Medal, Personalised certificate, photos, changing facilities, refreshments, and more. - [How long are the children's courses?](https://nuclearessex26.wpenginepowered.com/faq/how-long-are-the-rookie-courses/): Rush Weekend Ages 4–8: 1 lap (1. 5k) – 15+ obstacles Ages 9–14: 2 laps (3k) – 30+ obstacles Mud... - [How long does it take a child to complete the course?](https://nuclearessex26.wpenginepowered.com/faq/how-long-does-it-take-a-rookie-to-complete-the-course/): Nuclear Races Rush Weekend Around 45 minutes depending on the child’s age, speed and ability. Mud Tribe 1. 5km around... - [Are the children's races competitive?](https://nuclearessex26.wpenginepowered.com/faq/are-rookie-races-competitive/): It is all about having a muddy good time and there are no prizes for fastest times. Every Rookie (child)... - [How old to children need to be to race?](https://nuclearessex26.wpenginepowered.com/faq/what-age-can-take-part-in-rookies/): Rush Weekend Rookies (children) aged 4–14 years can race: Ages 4–8: must be accompanied by a parent/guardian on the course... - [Can children skip obstacles?](https://nuclearessex26.wpenginepowered.com/faq/can-children-skip-obstacles/): There’s no pressure to complete every obstacle but we encourage the Rookies (children) to give it a go. - [Do children need to be able to swim?](https://nuclearessex26.wpenginepowered.com/faq/do-children-need-to-be-able-to-swim/): Swimming is not required, buoyancy aids are available on race day. At Wild Forest, everyone is fitted with a buoyancy... - [Can children in different age categories run together?](https://nuclearessex26.wpenginepowered.com/faq/can-children-in-different-age-categories-run-together/): All age groups start the race together. The older children will complete an extra lap and wear a wristband. - [Do I need to pay for a spectator ticket if my child is racing?](https://nuclearessex26.wpenginepowered.com/faq/do-i-need-to-pay-for-a-spectator-ticket-if-my-child-is-racing/): One free spectator ticket is included with every child (Rookie) race entry (to be claimed at registration). Rush Weekend: £5... - [Are spectators welcome?](https://nuclearessex26.wpenginepowered.com/faq/can-i-watch-my-child-on-the-course/): Spectators are welcome at our events. Entry fees and access vary by event. Please follow signs and stay in designated... - [Can I help my child over obstacles?](https://nuclearessex26.wpenginepowered.com/faq/can-i-help-my-child-over-obstacles/): Parents can assist younger children around the Rookies course, with ages 4–8 requiring an accompanying adult at a ratio of... - [Are there changing and wash-down facilities?](https://nuclearessex26.wpenginepowered.com/faq/are-there-changing-and-wash-down-facilities/): Hot outdoor wash downs (limited time per person) Child-only changing areas available Bring clean clothes, shoes, towels and a plastic... - [How can I buy the Nuclear Merch?](https://nuclearessex26.wpenginepowered.com/faq/is-there-rookie-merchandise-to-buy/): You can buy this online or on the day. The Nuclear Essex shop will be on site at each event... - [Are there photos taken on course?](https://nuclearessex26.wpenginepowered.com/faq/are-there-photos-taken-on-course/): Yes — professional photographers from My Bib Number capture action shots throughout the course, including a free finisher’s wall photo. - [Are children chip timed and are results available?](https://nuclearessex26.wpenginepowered.com/faq/are-rookies-timed-and-are-results-available/): All children (Rookies) wear a timing chip. Results will be published on the website, there is a free downloadable certificate... - [Do you charge a parking fee?](https://nuclearessex26.wpenginepowered.com/faq/do-you-charge-a-parking-fee/): Parking is free at all sites and events, apart from Nuclear Mud Tribe, which has a £5 parking fee per... - [Are dogs allowed?](https://nuclearessex26.wpenginepowered.com/faq/are-dogs-allowed-2/): Well-behaved dogs on leads are welcome at Nuclear Races, Nuclear Fit, Nuclear Mud Tribe, the Secret Nuclear Bunker and Nuclear... - [How do I marshal at one of the events?](https://nuclearessex26.wpenginepowered.com/faq/how-do-i-marshal-at-one-of-your-races/): We welcome volunteers at all events and offer rewards for your time. Registration opens before each event - [Will there be medical help available?](https://nuclearessex26.wpenginepowered.com/faq/will-there-be-medical-help/): A professional NHS emergency team will be on-site in 4×4 vehicles, covering the course, race village, and surrounding areas. - [Can I pay to have my Dryrobe deal delivered?](https://nuclearessex26.wpenginepowered.com/faq/can-i-pay-to-have-my-dryrobe-deal-delivered/): You can choose delivery at checkout. If you’ve already booked and want it delivered, please email shop@nuclearessex. com - [How do I collect my prepaid Dryrobe?](https://nuclearessex26.wpenginepowered.com/faq/how-do-i-collect-my-prepaid-dryrobe/): Take your booking confirmation email and ID to the Nuclear Shop in the event village. - [Can I upgrade to the Dryrobe deal?](https://nuclearessex26.wpenginepowered.com/faq/can-i-upgrade-to-the-dryrobe-deal/): Yes - use the link in your confirmation email to access your booking and edit/ upgrade your ticket. Click on... - [How long are the sessions?](https://nuclearessex26.wpenginepowered.com/faq/how-long-are-the-sessions/): Session lengths vary by activity — from 30 minutes to up to 2 hours. - [How old do you need to be for the High Ropes Activity?](https://nuclearessex26.wpenginepowered.com/faq/how-old-do-you-need-to-be/): The minimum age for the high ropes course is 6 yrs and participants must be 1. 20m tall. Adults will... - [How old do you need to be for the Zip Trek Course](https://nuclearessex26.wpenginepowered.com/faq/how-old-do-you-need-to-be-for-the-zip-trek-course/): The minimum age for the Zip Trek course is 8 yrs and participants must be 1. 20 m tall. Adults... - [How old do you need to be for the Axe Throwing experience?](https://nuclearessex26.wpenginepowered.com/faq/how-old-do-you-need-to-be-for-the-axe-throwing-experience/): We offer 2 types of Axe and Knife throwing sessions, our Full Axe and Knife session is suitable for participants... - [How old do you need to be for the Air Rifle Taster session](https://nuclearessex26.wpenginepowered.com/faq/how-old-do-you-need-to-be-for-the-air-rifle-taster-session/): Our Air Rifle taster session are suitable for participants aged 14 years old and above. all under 18 year old... - [What should I wear for Axe Throwing?](https://nuclearessex26.wpenginepowered.com/faq/what-should-i-wear/): Wear comfortable layers and sturdy closed-toe shoes. Avoid clothing with hoods for safety. - [Do I need to participate with my children on the High Ropes?](https://nuclearessex26.wpenginepowered.com/faq/do-i-need-to-participate-with-my-children/): It depends on your child’s age and ability — some children must be accompanied by a paying adult, but participation... - [Do I need to participate with my children?](https://nuclearessex26.wpenginepowered.com/faq/do-i-need-to-participate-with-my-children-2/): All children must be accompanied by a paying, participating adult when taking part in our Zip Trek experience; this is... - [Do I need to participate with my children?](https://nuclearessex26.wpenginepowered.com/faq/do-i-need-to-participate-with-my-children-3/): Any under 18 year olds must have an adult at the Throwing range to supervise behaviour and ensure everyone is... - [Do I have to remain on site?](https://nuclearessex26.wpenginepowered.com/faq/do-i-have-to-remain-on-site/): A responsible adult (over 18) has to remain onsite at Nuclear Adventures at all times while children under 18 take... - [Are there any weight restrictions?](https://nuclearessex26.wpenginepowered.com/faq/are-there-any-weight-restrictions/): The maximum weight for taking part in our High Ropes and Zip Trek course is 120kg --- # # Detailed Content ## Pages Get ready for the sunshine. Sign up to stay informed about our annual Summer Holiday events, seasonal releases, and member-only vacation perks. --- Browse through the photos and videos from previous events --- Take a look at previous Nuclear Fit event results. --- Nuclear Fit is made up of a 1km trail run alternated with a functional fitness station repeated 6 times. --- We are proud to support Haven House Children’s Hospice in Woodford Green and are asking our Nuclear Fit competitors to race for a reason. --- Has your team got what it takes to be crowned Nuclear Fit league champions 2026? --- Need some preparation ahead of Nuclear Fit? Don’t worry, we have regular training sessions designed to familiarise you with the various fitness stations and get you ready for the big Nuclear Fit day itself! --- Browse through the photos and videos from previous events --- Escape the everyday and get ready for the some award winning outdoor fitness action at Nuclear Races - our popular obstacle course events are designed to challenge every fitness level. You'll tackle our famous muddy obstacles, from cargo nets to climbing walls, for an unforgettable physical activity that guarantees a huge sense of accomplishment at the finish line. --- Prepare for the ultimate muddy obstacle course race at Nuclear Rush. Choose your challenge on our 6K or 12K courses; there's over 70 obstacles on the 12K course, including our famous Death Slides and para-plunge zip lines. Our exciting courses are designed to test every fitness level, whether you’re a beginner or a seasoned mud racer. This event is a must-do race! --- Experience the ultimate challenge at Nuclear Fallout, a true winter beast! Choose your distance on our award winning 6K or 12K muddy obstacle course. Whether you’re a first-timer or a seasoned obstacle racer, the course is designed to be fun and challenging for all fitness levels. Expect a mix of natural and man-made muddy obstacles, from woodland and bogs to our famous Deathslide. --- As the competitive highlight of our Nuclear Rush event, we’re proud to host the British OCR Championship here each year. Sanctioned and supported by British Obstacle Sports, this championship is specifically designed for elite and professional OCR athletes, offering the ultimate test of strength, endurance, agility and mental toughness. --- Browse through the photos and videos from previous events --- We encourage friends and family to come along to our events. There’s loads of obstacle action to watch, a rocking event village, music, kids races, entertainment, good food/drink, stuff to buy, see and do! --- why not give the gift of adventure with one of our activity vouchers? --- As one of our #marshalfamily you’ll be helping our Nuclear Race day be a great one! Marshalling may include: an obstacle on the course, duties in the event village, finish zone or flow management. --- Ready to gather your girls for an unforgettable adventure? Mud Tribe Sisters celebrates all that is brilliant about being female: an empowering women’s obstacle course event welcomes participants of all ages and fitness levels to come together and tackle the challenge side by side. Mud, sweat and smiles included! --- Nuclear Mud Tribe Blast is the perfect next-level challenge for those looking to push their limits with an extra 1 km of muddy adventure and tougher obstacles inspired by the classic Nuclear Blast course. Ideal for groups of friends, families, or office teams, this fun and inclusive wave is all about teamwork, laughter and shared achievement! --- Push your limits with Nuclear Fit, a unique outdoor fitness race designed to push you physically and mentally. This fitness race combines six 1km trail runs with intense workouts and fitness stations, like sled pulls and tyre flips. Don’t like running? Nuclear Fit Storm has all of the fitness stations, with none of the running. It's a fresh alternative for those looking for something different to Hyrox and get outdoors. --- Push your limits with Nuclear Fit, a unique outdoor fitness race designed to push you physically and mentally. This fitness race combines six 1km trail runs with intense workouts and fitness stations, like sled pulls and tyre flips. Don’t like running? Nuclear Fit Storm has all of the fitness stations, with none of the running. It’s a fresh alternative for those looking for something different to Hyrox and get outdoors. --- Don’t like running? Nuclear Fit Storm is for you! With all of the fitness stations of Nuclear Fit but with none of the running, you’ll have 45 minutes to complete as many of the functional fitness stations back to back as you can. Zero running, but maximum effort required to whip up a storm! --- Challenge yourself and your teammates with Nuclear Fit Relay, a dynamic outdoor fitness race built for teams of three. Work together to conquer the fitness stations, alternating between teammates – perfect for those who thrive on shared goals and friendly competition. --- Push your limits with Nuclear Fit, a unique outdoor fitness race designed to push you physically and mentally. This fitness race combines six 1km trail runs with intense workouts and fitness stations, like sled pulls and tyre flips. Don’t like running? Nuclear Fit Storm has all of the fitness stations, with none of the running. It’s a fresh alternative for those looking for something different to Hyrox and get outdoors. --- Push your limits in the Nuclear Fit Pro Wave: the ultimate test for competitive athletes seeking a true measure of all-round fitness. This elite category intensifies the classic Nuclear Fit format with six fast 1km trail runs, strict mandatory stations and full chip timing, creating a high-pressure race environment with zero compromises, designed to test the very best! --- Join the fun at Mud Tribe, a 5k muddy obstacle course run that’s suitable for all abilities. Designed with fun in mind, this is the perfect event for those looking to get muddy and enjoy the experience, and with a 1.5K option available, it’s great for families too! Get ready for a day of mud, foam, and laughs as you navigate the obstacle course, create unforgettable memories, and maybe even raise money for a good cause. --- Gather your tribe! Join the fun at Mud Tribe, a 5k muddy obstacle course run that’s suitable for all abilities. Designed with fun in mind, this is the perfect event for those looking to get muddy and enjoy the experience, and with a 1.5K option available, it’s great for families too! Get ready for a day of mud, foam, and laughs as you navigate the obstacle course, create unforgettable memories, and maybe even raise money for a good cause. --- --- Browse through the photos and videos from previous events --- 90 minute technique, skills and race endurance training --- Make memories in the great outdoors this Father’s Day. Sign up to get priority access to our open-air activities and be the first to hear about our event dates. --- Hop along for some cracking Easter fun for the whole family. --- Beat the post Christmas cabin fever and join us for a 2K woodland obstacle run. It’s a relaxed, fun vibe and is the perfect way to work off the festive over indulgence in the great outdoors whilst trying out our obstacle course! --- 2 hours of obstacle skills --- New for 2026 take on the 400m sprint course --- Join us for our annual Easter festivities. Sign up to receive seasonal updates, holiday inspiration, and exclusive news delivered to your inbox. --- As well as our regular adventures, we also have a variety of special events and activities taking place throughout the year. Take a look below at what's on at Nuclear Essex --- 90 minute technique, skills and race endurance training --- Forget the traditional Sunday routine and take Mother’s Day to new heights at Essex's leading multi-activity hub. Whether she’s conquering her fears on the biggest high ropes course in the county at Nuclear Adventures or exploring over 20 acres of natural discovery at Nuclear Wild Forest, give her a mission she’ll never forget. --- Are you ready to beat the wall, swing on the mighty monkey bars, crawl through tyres, climb ramps and walls, slip & slide and get seriously muddy? --- Whether it’s the crisp air of February or the heat of October half-term, Nuclear is the ultimate destination for kids to swap screen time for "green time." Our Half-Term activity hub is your year-round guide to what’s happening on the ropes, in the mud, and around the campfire. --- Got a question about one of our services? Or perhaps want to organise a party or private event? No matter your query or reason for getting in touch, our award-winning customer service team are here to help. Get in contact via the details below. --- --- Review our general booking terms and conditions for crucial information regarding: Payment deadlines, participant cancellation and rescheduling policies, and any applicable administration fees. All guests must adhere to our health and fitness requirements and complete all necessary waivers prior to participation. --- --- Hidden beneath the calm of rural Essex, set deep into the county's beautiful countryside, lies the Kelvedon Hatch Secret Nuclear Bunker - a three-level, 38-metre deep stronghold once destined for the gravest of duties. --- Experience Halloween like never before with a muddy obstacle twist. The 90 minute Halloween Blackout event combines the thrill of our obstacle course with spooky surprises, live actors and more. --- Nuclear Striders is a small friendly running club, based at Wild Forest within the Nuclear Races estate. We welcome runners of all standards across the UK to become a member. Our aim is to be a community running club for sport & pleasure. --- Read the reviews and testimonials from a variety of participants from parents and children to corporates and larger groups --- Experience the thrill of Nuclear High Ropes at night! Open to ages 6+, this illuminated ropes course offers a unique evening adventure under the lights. Perfect for family fun or a night out with friends. Ready to take on the challenge? --- As well as our regular adventures, we also have a variety of special events and actvities taking place throughout the year. Take a look below at what's on at Nuclear Essex --- Our vouchers make a great gift for any occasion. Why not give the gift of memories rather than simply more stuff? Vouchers are valid for 12 months from date of purchase and can be easily redeemed via our website. --- A Gift Voucher from Wild Forest makes a really unique & memorable present to buy for someone as a special gift. It is valid for one year from date of purchase. --- --- Bring your team together with unforgettable experiences at Nuclear Essex. From muddy obstacle challenges and outdoor adventures to unique meeting spaces and exciting fitness races, we offer the perfect mix of fun, teamwork, and connection. With comfortable facilities and flexible spaces, your team can focus on the experience — pushing boundaries, celebrating achievements, and creating memories that last long after the day is over. --- Our outdoor, active parties are made for anyone who wants to celebrate big! Packed with fun, energy, and adventure, they’re the perfect way to create lifelong memories with family and friends. --- If you are a charitable organisation or wish to fundraise for a good cause, we can work together to create a successful unique event so you can focus on reaching your charity/fundraising target. --- Trade the routine for the rugged: at Nuclear Essex, clubs and groups can experience unforgettable outdoor adventures packed with mud, laughter and teamwork. From obstacle courses and adrenaline-fuelled challenges to confidence-building fun, it’s the perfect destination for Scouts, Guides, sports teams, youth clubs, adult groups and others who are looking for something different. --- Get ready to unleash your wild side! From treetop adventures and muddy obstacle mayhem to epic axe throwing, our outdoor activities guarantee laughs, banter and unforgettable memories. We’ll handle all the planning so you can focus on the bride or groom, safe in the knowledge that everything else will be stress-free from your first enquiry to your big day out! --- Review our general booking terms and conditions for crucial information regarding: Payment deadlines, participant cancellation and rescheduling policies, and any applicable administration fees. All guests must adhere to our health and fitness requirements and complete all necessary waivers prior to participation. --- Discover a great value day out in Essex to the unique setting that is the Kelvedon Hatch Secret Nuclear Bunker, and experience a slide of Cold War history for yourself. Our self guided tours are available for both adults and children, to allow multiple generations to enjoy the visit together. --- At Nuclear Essex, we offer exciting outdoor adventures that challenge and inspire. From obstacle courses to team-building activities, participants of all ages and abilities can enjoy fun, achievement, and a sense of togetherness. Whether you're a school trip, youth group outing, enjoying a corporate day, or simply an individual, Nuclear Essex is the perfect place to make lasting memories. --- Our experienced team brings together a range of skills, qualifications and specialisms across Nuclear Essex. With exceptional enthusiasm and a focus on customer service, we make every visit safe, fun and unforgettable. --- Want to join an award winning team and do something that you love, every single day? Nuclear Essex could be the start of your next great adventure! Take a look at our vacancies below. --- We're proud to be one of the most accredited and award-winning outdoor adventure providers in the UK. Take a look at our various awards --- Partnering with Nuclear Essex offers your business a unique opportunity to connect with thousands of active, engaged participants across the UK’s most thrilling obstacle courses and activities. From sponsoring high-profile events to bespoke collaborations across our venues, your brand can benefit from exceptional visibility, targeted engagement and a reputation aligned with energy, adventure, and teamwork. --- Nuclear Races Ltd acknowledges the duty of care to safeguard and promote the welfare of children and is committed to ensuring safeguarding practice reflects statutory responsibilities, government guidance and complies with best practice. --- At Nuclear Essex, we're committed to working with what nature gave us: the local Essex countryside, the natural terrain and topography of the land, and, of course, mud! That's why sustainability is more than just a buzz word for us: it's preserving the land around us. --- Have an adventure on the obstacles at Nuclear Wild Forest! Have a go as an individual, testing your skills on a wide variety of obstacles and challenges, or bring a group and enjoy the course together. A great chance to have fun and enjoy the outdoors in a unique way! --- If you like the idea of an outdoor obstacle course race but aren't sure what to expect, our Obstacle Taster sessions are the perfect introduction. Get ready for lots of laughter, a bit of mud, and an amazing feeling of accomplishment, all safely in the knowledge that you're in the hands of expert guidance. --- Tucked beneath a canopy of trees, our three lane, multi target axe throwing range is the perfect place to test your axe and knife throwing skills. Whether you're looking for a family activity or an excuse to gather your friends, our trained experts will teach you the proper throwing techniques, so you'll be hitting bullseyes in no time. --- Beat the post Christmas cabin fever and join us for a 2K woodland obstacle run. It’s a relaxed, fun vibe and is the perfect way to work off the festive over indulgence in the great outdoors whilst trying out our obstacle course! --- Looking for an unforgettable outdoor party venue with a difference? Our parties at Nuclear Wild Forest are the ultimate outdoor experience for energetic kids (and big kids!) who love to climb, crawl and get gloriously muddy! --- Nuclear Essex is located in Brentwood, Essex just 15 minutes from the A12, M25 and M11. --- Break free from the classroom for a fun outdoor adventure, enrichment day, end of year celebration, residential or school trip. Nuclear Essex has been awarded the Quality badge by the Council For Learning Outside The Classroom (LOTC). --- Got a question about one of our services? Or perhaps want to organise a party or private event? No matter your query or reason for getting in touch, our award-winning customer service team are here to help. Get in contact via the details below. --- Nuclear Essex is committed to ensuring digital accessibility for people with disabilities. We are continually improving the user experience for everyone and applying the relevant accessibility standards. --- --- Come and witness the three lives of the bunker starting with its role as an RAF ROTOR Station, then a brief period as a civil defence centre through to its most recent life as a Regional Government HQ. --- --- Looking for a completely unique venue for a day out, an educational visit or even a social event? The Kelvedon Hatch Secret Nuclear Bunker can provide an experience like no other! --- Need a filming or photography location in the heart of Essex which also encapsulates Cold War history? The Kelvedon Hatch Secret Nuclear Bunker is the perfect place! --- Hidden beneath the calm of rural Essex, set deep into the county's beautiful countryside, lies the Kelvedon Hatch Secret Nuclear Bunker - a three-level, 38-metre deep stronghold once destined for the gravest of duties. --- Before starting your session, you will be greeted by your instructor who will confirm you have read a copy of our safety rules and advice. To help get you up on the course as quickly and safely as possible, we ask that all guests watch our induction video before arrival. --- why not give the gift of adventure with one of our activity vouchers? --- --- We have a large selection of technically challenging and fun obstacles to learn and refine your OCR skills on. Explore all of our obstacles below. --- Bring your school, youth group, club or sports team to Nuclear Essex for an unforgettable day of adventure, teamwork and fun. Perfect for enrichment days, class bonding, fundraisers, and end-of-year celebrations, our activities build confidence, resilience, motivation and friendship, led by experienced, DBS-checked instructors in a safe, LOTC-accredited environment. --- Ready to take to the skies - but maybe not too high just yet? Our High Ropes Little Monkeys sessions are designed especially for the cautious little daredevils, offering a fun, safe, and confidence-boosting way to begin to experience adventure. --- Take part in a truly personal adventure where calm meets challenge! Our exclusive Quiet Sessions are specially created for individuals with Special Educational Needs (SEN), offering a welcoming, safe and sensory-considerate environment for everyone to enjoy. --- Take a step back in time to the Cold War era with a visit to the Kelvedon Hatch Secret Nuclear Bunker. This massive underground complex is the biggest and deepest Cold War bunker open to the public in the Southeast of England. --- Join one of our range of weekly outdoor fitness classes at Nuclear Wild Forest, which are suitable for all abilities. Hosted by qualified personal trainers (PTs), this is a unique way to improve your fitness, motivation and resilience, meet likeminded people and train in the great outdoors, right here in Essex. --- Take on a high ropes adventure at our challenging course where you’ll navigate thrilling obstacles and ziplines high in the air. The perfect outdoor activity, our course is designed to test your balance and courage. Whether you're looking for a new challenge or a memorable day out with friends, our high ropes experience is an adventure you won't forget. --- Discover the ultimate treetop adventure at our epic zipwire course. Soar through the air on a series of breathtaking zipwires as you navigate a challenging 500-metre course through the canopy, providing an unforgettable outdoor activity for all ages. It's the perfect zip line adventure for families and groups of all skill levels. --- Unleash your inner warrior at Nuclear Adventures axe throwing venue. Our four-lane outdoor range provides the perfect setting for you to master the art of the throw. With expert instructors guiding you, you'll learn proper techniques for throwing knives and axes, ensuring you can make an accurate throw in no time. All you need is a pair of closed toe shoes and a desire to hit the bullseye! --- Looking for a high adrenaline add on to your Nuclear High Ropes experience? If so, the Big Drop is the perfect end to the session! Experience the thrill of a 50 foot / 13 metre free fall experience - it's the ultimate test of courage and feeling of exhiliration! --- Nuclear Adventures is the ideal location for a fun, exciting & adventurous birthday party. Our dedicated team is on hand to help organise your booking and host your party so you & your children can have fun with friends. We welcome party bookings 7 days a week including week-days, weekends, school holidays & during term time after school. --- Experience the greatest outdoor adventure at Nuclear Adventures. Take on our thrilling high ropes or Zip trek course where you'll test your balance and courage. Unleash your inner warrior at our axe throwing range, where expert instructors will teach you how to make an accurate throw with knives and axes. You can also hone your aim at our air rifle shooting range, where you’ll learn to load, aim and fire with confidence. --- Escape the ordinary, get outdoors, and let your inner adventurer free at Nuclear Wild Forest. It’s home to an exciting muddy obstacle course designed to push your limits, tackling climbing walls, slides and zip lines. Or why not test your aim with knife and axe throwing? It’s got something for everyone - from kids, families, and friends, to parties, school trips and corporate events. --- Find quick answers to some common frequently asked questions we get asked. --- Tales from our trails: keep up to date with all of our latest news and any insight we may have into the world of fitness, OCR racing and outdoor adventures! --- Make the most of your Nuclear Essex experience with our various offers that are available across the whole of the Nuclear Essex activities --- --- ## Posts Take a look at some of the top activities on offer at Nuclear Essex. --- If you’re looking for a challenge, a bit of adventure and a lot of mud, Nuclear Rush is the perfect event to add to your calendar. --- As hybrid fitness racing grows in popularity, Nuclear Fit offers a tougher, more accessible outdoor alternative — combining trail runs, functional fitness stations and real competition without the high costs. --- In this guide, we break down how to train effectively, from building your running base to mastering workouts under fatigue, so you can arrive on the start line ready to perform --- We’re honoured to have won both Business of the Year and Customer Service Award at the Brentwood Chamber of Commerce Awards 2025! This incredible recognition celebrates our team’s passion, dedication, and commitment to delivering outstanding outdoor experiences across all of Nuclear Essex. --- More than 1,000 competitors descended on Kelvedon Hatch this September for Nuclear Fit’s largest event to date. What began as a small local challenge has grown into one of the UK’s most exciting and inclusive fitness races — a true celebration of strength, community, and the unstoppable Nuclear spirit. --- Our team recently completed water safety training with the experts at Swim Safety Ltd, ensuring everyone across Nuclear Essex is confident and prepared when working in and around water. This hands-on training keeps every experience safe, exciting, and expertly managed. --- Our teams at Nuclear Wild Forest and Nuclear Adventures recently completed Neurodiversity Awareness Training, gaining valuable insights and practical tools to better support every visitor. This training strengthens our commitment to creating inclusive, understanding, and empowering outdoor experiences for all. --- We’re proud to be named Best Small/Medium Business and finalists for Best Customer Service at the Brentwood Chamber of Commerce Awards! This recognition celebrates our dedicated team and the vibrant community that makes every Nuclear experience unforgettable. --- --- ## Events Cool down this summer in our Lake Zone, packed with water obstacles and slides designed for all ages. --- Gather your tribe! Join the fun at Mud Tribe, a 5km muddy obstacle course run that’s suitable for all abilities. --- Tackle the Nuclear winter beast! Choose from our multi award winning 6K or 12K lapped course. Whether you’re a newbie, small group, big team, veteran or competitive endurance racer, Nuclear courses are thoughtfully designed to be challenging, fun and achievable for all ages and every fitness ability. --- Take on a high ropes adventure at our challenging course where you’ll navigate thrilling obstacles and zip lines high in the air! --- Ladies Fitness Class A fun, empowering outdoor fitness class for ladies. --- Cool down this summer in our Lake Zone, packed with water obstacles and slides designed for all ages. --- Ready to hit the bullseye of our axe throwing range? Test your skills on our three lane, multi target range! --- --- --- --- --- --- --- --- --- --- --- --- --- --- Our Pay and Play sessions allow you to take on our signature obstacles and challenges at your own pace. Whether you are an individual testing your skills or a group looking for a unique outdoor experience, it is the perfect chance to have fun and master the course in a supportive, open environment. --- --- --- --- --- Make Father’s Day one to remember with a fun outdoor experience at Wild Forest — Dad goes free when accompanied by a full-paying adult or child. --- Ready to hit the bullseye of our axe throwing range? Test your skills on our three lane, multi target range! --- Take on a high ropes adventure at our challenging course where you’ll navigate thrilling obstacles and zip lines high in the air! --- 90 minutes of halloween themed day and nighttime muddy obstacle course with actors, and decorations. --- Discover a great value day out in Essex to the unique setting that is the Kelvedon Hatch Secret Nuclear Bunker, and experience a slide of Cold War history for yourself. --- --- Discover the ultimate treetop adventure at our epic high ropes and zipwire course. --- Ready to hit the bullseye of our axe throwing range? Test your skills on our three lane, multi target range! --- Looking for a high adrenaline add on to your Nuclear High Ropes experience? If so, the Big Drop is perfect for you! --- --- --- --- ## Offers One Pass. Unlimited Thrills. Your Best Summer Ever at Nuclear Adventures. --- Make Father’s Day one to remember with a fun outdoor experience at Wild Forest — Dad goes free when accompanied by a full-paying adult or child. --- We’re inviting gyms, bootcamps, corporate teams and fitness communities across the country to partner with Nuclear Fit. --- Give Dad the gift of adventure. Dads get in absolutely free on Father's Day! --- Gather your allies for a deep-dive into Cold War history. Secure entry for your group at our special tactical rates: --- Three events. One elite medal. Consistency never looked so good. --- Gather your tribe! Book a 5k team wave with 20+ members for FREE parking, or hit 30+ for a £50 Nuclear Voucher. --- Start your Christmas shopping early! Get 15% OFF all Nuclear Essex merchandise and gear in our Pre-Christmas Shop Sale. --- Secure a single booking for 20 or more participants in Nuclear Adventures standard activities and automatically take 10% OFF the total cost. --- Book an adrenaline-fueled Nuclear Adventures party (10+ participants) and the Birthday Child's space is completely FREE! --- Book your next school trip to Nuclear Adventures or Nuclear Wild Forest, and all accompanying teachers/supervisors go FREE! --- Rally your team! Groups of 10+ get 10% OFF all entries. Hit 30, 60, or 100 members for FREE places and exclusive Nuclear swag. --- Got a Nuclear Race ticket? Get ONE FREE Wild Forest obstacle course induction to learn tips, master safety, and train before race day! --- Purchase a co-branded Nuclear DryRobe at checkout and get a FREE entry for an eligible Nuclear Race, Rookie event, or Nuclear Fit session! --- Enter 2 of our qualifying children's races in a calendar year and earn the free, absolutely HUGE, blinging Rookie Mudallion! --- Double the challenge, less of the cost! Book 2 or more activities at Nuclear Adventures and automatically save 15% on your total price. --- Prove your commitment: Complete three totally different qualifying Nuclear Races events in one year to earn the legendary, exclusive Mighty Mudallion. --- Build your ultimate race calendar! Select 3+ Nuclear Races and/or Nuclear Fit events for a discounted rate with interest-free Clearpay. --- --- ## FAQs Visits usually last between 1–2 hours depending on your level of interest. --- The bunker has accessibility limitations due to its historic design. --- Ticket transfers and changes are possible via your booking dashboard or by contacting us, depending on your race type and timing. --- The Bunker has a small canteen serving hot drinks, cakes, snacks, and sandwiches. --- The Bunker is available for private hire for events and experiences. --- The Bunker is available for filming and photography projects. --- The Bunker is a Cold War-era underground nuclear bunker open to the public as a museum and event venue. --- The Bunker Below is an immersive Halloween horror experience set 125 feet underground in a real Cold War-era nuclear bunker in Essex. --- For safety reasons, we advise against participating while pregnant. Please seek medical clearance before taking part after giving birth. --- Yes — gift vouchers are available to buy online and make the perfect present for adventure lovers. --- Your ticket includes a medal, hot water washdown, heated changing tents, and more — everything you need for an epic race day --- Join our regular Nuclear Fit training classes or our 6-week race prep programme to improve your technique, strength, and transitions. --- You can buy this online or on the day. The Nuclear Essex shop will be on site at each event for you to purchase kit by cash or card. --- Nuclear Fit offers Individual, Doubles, and Pro divisions, plus Storm races for a purely fitness-focused challenge. --- Nuclear Fit features a range of strength and endurance stations including tyre flips, carries, lifts, and throws tailored for men and women. --- Finishers receive medals, top racers get trophies, and extra rewards are available for completing challenges. --- Nuclear Fit uses chip timing to rank competitors within age categories from U24 to 85–89 years. --- Runners must follow all race regulations, complete workouts in the correct order, use the appropriate equipment, and finish within the time limit. --- Sign up to one of our races, create your own bespoke event, or design a Wild Forest mud run — then share your fundraising page with your community. --- Wear fast-drying, breathable clothing and trail trainers with good grip. Avoid cotton and footwear without traction. --- Training for Nuclear Races gives you a full-body workout. Mix running, strength training, and mobility exercises to build endurance and confidence. --- Some swimming ability can help, but it is not essential. Buoyancy vests and trained water safety teams are available at all water-based obstacles. --- Free onsite camping is available. You can book at the time of registration or add it later via your booking dashboard. --- Your ticket includes a finisher’s medal, car parking, photos, changing facilities, refreshments, camping, and more. --- If you miss your start wave, speak to registration to move you to the next available wave. Correct wristbands are required to race. --- We do not offer refunds, but you can transfer your ticket to another event or person up to 48 hours before race day. --- Your ticket includes a Rookie Survivors Medal, Personalised certificate, photos, changing facilities, refreshments, and more. --- Spectators are welcome at our events. Entry fees and access vary by event. Please follow signs and stay in designated areas. --- You can buy this online or on the day. The Nuclear Essex shop will be on site at each event for you to purchase kit by cash or card. --- Yes — professional photographers from My Bib Number capture action shots throughout the course, including a free finisher’s wall photo. --- We welcome volunteers at all events and offer rewards for your time. Registration opens before each event --- Session lengths vary by activity — from 30 minutes to up to 2 hours. --- Wear comfortable layers and sturdy closed-toe shoes. Avoid clothing with hoods for safety. --- It depends on your child’s age and ability — some children must be accompanied by a paying adult, but participation isn’t always required. --- Yes! We’ll prepare you first and support you throughout. Many people surprise themselves and overcome their fears. --- Nuclear Adventures is an all-weather outdoor experience. We stay open in most conditions, but extreme weather may affect your booking. --- We aim to be fully inclusive and will do everything we can to help disabled clients participate. --- We have downloadable invites available below --- The Big drop is our 50ft fan descender and can be added to your booking at checkout or once on site. --- Nuclear Races challenge all levels of fitness ability & ages, testing courage, determination, teamwork & physical strength. Based on permanent farmland with mud, woods, rivers, lakes & fields Nuclear pushes participant’s limits over a fun combination of big & small obstacles packed on award winning courses which are mixed up at every event. --- Your free finishers photo and the optional action Photos to purchase will be available to download/share/email from our website nuclear-races.co.uk and facebook.com/TheNuclearRaces/ about 48 hours after the event. --- ---